In the manga

Mecha Tyranitar in Pokémon Adventures

In the Pokémon Adventures manga

Mecha Tyranitar appeared in Movie Panic, where it appeared during the filming of a Brycen-Man movie starring Whitley as the heroine. The rampaging mecha was soon stopped by Blake and his Dewott, and the unplanned scene was added to the finished Brycen-Man movie.

Trivia

MT (Mecha-Tyranitar) is a reference to Mecha-Godzilla, also referred to as MG, a robotic replica of the giant monster Godzilla.

Through the use of cheating, Pokéstar Studios opponents can be made to appear in the wild in Black 2 and White 2, although as the game will attempt to bring up a nonexistent Pokédex entry upon capture, the game will freeze. If they are obtained, they can only reside in the Storage System, as any attempt to move them to the party will cause them to turn into Bad Eggs.